In this activity, participants work together to collaborate on a design for a structure that will float. When additional weight is added, teams go back to the drawing board to see if they can re-design their structure to hold more weight.
In the 4-H Eco-Bot Challenge, a challenge developed for the 2012 4-H National Youth Science Day (NYSD), participants build and test an autonomous robot, called an Eco-Bot, to clean up a simulated environmental spill. Visit the 4-H Mall to purchase Eco-Bot Challenge Kits.
In this activity developed by Techbridge, participants explore some of the challenges related to cooking meals in regions where electric or gas stoves are scarce. They learn about potential problems (such as respiratory diseases) with using open fires for cooking. Then, youth design and build their own stove.